公开(公告)号：US20210203921A1

公开(公告)日：2021-07-01

申请号：US17134092

申请日：2020-12-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gun BANG ,  Woong LIM

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/46 ,  H04N19/176

Abstract: Disclosed herein are a method, apparatus and storage medium for image encoding/decoding using a reference picture. A picture is divided into multiple sub-pictures. The sub-pictures of the picture share a reference picture list. In order to determine sub-pictures that share the reference picture list, specific information is signaled from an encoding apparatus to a decoding apparatus. For each sub-picture that does not share a reference picture list for an additional sub-picture, a reference picture list for the sub-picture is separately configured.

公开(公告)号：US20200275134A1

公开(公告)日：2020-08-27

申请号：US16309595

申请日：2017-07-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gun BANG ,  Kug Jin YUN ,  Youngsoo PARK

IPC: H04N21/218 ,  H04N21/63 ,  H04N21/2343

Abstract: An apparatus for providing a 360 degree virtual reality broadcasting service uses an image acquired through a 3D virtual reality (VR) camera to transmit a 360 degree full image stream having first resolution and transmits an image stream of a view of interest (Vol) region having second resolution different from the first resolution according to a user selection mode and move information if the user selection mode and the movement information are received from a receiving apparatus.

公开(公告)号：US20180359481A1

公开(公告)日：2018-12-13

申请号：US16103042

申请日：2018-08-14

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Gun BANG ,  Gwang Soon LEE ,  Nam Ho HUR ,  Gwang Hoon PARK ,  Young Su HEO ,  Kyung Yong KIM ,  Yoon Jin LEE

IPC: H04N19/51 ,  H04N19/52 ,  H04N19/597

CPC classification number: H04N19/51 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597

Abstract: Disclosed are a video encoding/decoding method and apparatus including a plurality of views. The video decoding method including the plurality of views comprises the steps of: inducing basic combination motion candidates for a current Prediction Unit (PU) to configure a combination motion candidate list; inducing expanded combination motion candidates for the current PU when the current PU corresponds to a depth information map or a dependent view; and adding the expanded combination motion candidates to the combination motion candidate list.

公开(公告)号：US20240323447A1

公开(公告)日：2024-09-26

申请号：US18734696

申请日：2024-06-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gun BANG ,  Woong LIM ,  Hui Yong KIM

IPC: H04N19/70 ,  H04N19/117 ,  H04N19/119 ,  H04N19/14 ,  H04N19/172 ,  H04N19/50 ,  H04N19/82 ,  H04N19/86

CPC classification number: H04N19/70 ,  H04N19/117 ,  H04N19/14 ,  H04N19/172 ,  H04N19/82 ,  H04N19/86 ,  H04N19/119 ,  H04N19/50

Abstract: Disclosed herein are a video encoding/decoding method and apparatus. The video decoding method according to the present invention includes: obtaining information on whether filtering is performed on a virtual boundary for a current picture from a bitstream; decoding information on the number of virtual boundaries based on the information on whether filtering is performed on a virtual boundary; decoding information on a position of a virtual boundary based on the information on the number of virtual boundaries; and reconstructing the current picture based on the information on the position of the virtual boundary.

公开(公告)号：US20240314297A1

公开(公告)日：2024-09-19

申请号：US18676050

申请日：2024-05-28

Applicant: Electronics And Telecommunications Research Institute ,  University-Industry Cooperation Group Of Kyung Hee University

Inventor： Gun BANG ,  Gwang-Hoon Park ,  Woong Lim ,  Hui-Yong KIm ,  Woo-Woen Gwun ,  Tae-Hyun Kim ,  Dae-Young Lee ,  Won-Jun Lee

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: Disclosed herein are a method and apparatus for image encoding and decoding using prediction based on a block shape. Whether a prediction mode is available for a target block is determined. The determination is performed based on the shape of the target block. When the prediction mode is determined to be unavailable for the target block, signaling related to the prediction mode may be omitted, and determination of an additional prediction mode is performed. When the prediction mode is determined to be available for the target block, information indicating whether the prediction mode is to be used for the target block is signaled.

公开(公告)号：US20240153198A1

公开(公告)日：2024-05-09

申请号：US18484181

申请日：2023-10-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seong Jun BAE ,  Jung Won KANG ,  Soo Woong KIM ,  Ji Hoon DO ,  Gun BANG ,  Jin Ho LEE ,  Ha Hyun LEE

IPC: G06T15/20

CPC classification number: G06T15/20 ,  G06T2210/56

Abstract: The present invention relates to a method and apparatus for filling a blank area of MPI view plane based on a pixel ray path. A method for generating multi plane image (MPI) data according to an embodiment of the present disclosure may comprise: calculating a pixel value according to each view for each photographed object, based on a plurality of input images photographed from a plurality of views; generating a view plane at a specific point by recording the calculated pixel value on one MPI layer determined based on the spatial position of the corresponding photographed object among a plurality of MPI layers; and generating MPI data by additionally recording the pixel value for the view.

公开(公告)号：US20240144578A1

公开(公告)日：2024-05-02

申请号：US18114118

申请日：2023-02-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Soo-Woong KIM ,  Jung-Won KANG ,  Ji-Hoon DO ,  Gun BANG ,  Seong-Jun BAE ,  Jin-Ho LEE ,  Ha-Hyun LEE

IPC: G06T15/04 ,  G06T9/00 ,  G06T17/20

CPC classification number: G06T15/04 ,  G06T9/00 ,  G06T17/20

Abstract: Disclosed herein is a method for generating a texture map of a 3D mesh includes encoding a texture map of a 3D mesh, quantizing the encoded texture map, decoding the quantized texture map, performing rendering using the decoded texture map, and updating the texture map of the 3D mesh based on the value of a loss function.

公开(公告)号：US20230171390A1

公开(公告)日：2023-06-01

申请号：US17981426

申请日：2022-11-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seong-Jun BAE ,  Jung-Won KANG ,  Soo-Woong KIM ,  Gun BANG ,  Jin-Ho LEE ,  Ha-Hyun LEE ,  Sung-Chang LIM

IPC: H04N13/161 ,  H04N19/30 ,  H04N19/187

CPC classification number: H04N13/161 ,  H04N19/30 ,  H04N19/187 ,  H04N2013/0077

Abstract: Disclosed herein are an image compression apparatus and method. The image conversion method includes generating a multi-plane image reconfigured into layers in a depth direction based on multiple pieces of multi-view image data, generating an aggregated layer by aggregating the layers of the multi-plane image into at least one layer, and converting a multi-plane image including the aggregated layer into a two-dimensional (2D) atlas image.

公开(公告)号：US20230007290A1

公开(公告)日：2023-01-05

申请号：US17773747

申请日：2020-11-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Soo Woong KIM ,  Gun BANG ,  Jin Ho LEE ,  Ha Hyun LEE

IPC: H04N19/46 ,  H04N19/96 ,  H04N19/186 ,  H04N19/176

Abstract: Disclosed herein is a video decoding method including: obtaining a transform skip mode flag indicating whether transform/inverse transform is skipped in a current block; when transform/inverse transform is skipped in the current block according to the transform skip mode flag, determining that secondary transform/inverse transform is skipped in the current block; and when transform/inverse transform is not skipped in the current block according to the transform skip mode flag, obtaining a transform matrix index for secondary transform/inverse transform of the current block and, determining whether secondary transform/inverse transform is skipped in the current block based on the transform matrix index.

公开(公告)号：US20220312009A1

公开(公告)日：2022-09-29

申请号：US17621151

申请日：2020-06-22

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY

Inventor： Gun BANG ,  Jin-Young LEE ,  Woong LIM ,  Hui-Yong KIM

IPC: H04N19/119 ,  H04N19/172 ,  H04N19/96 ,  H04N19/117 ,  H04N19/86

Abstract: Disclosed herein are a method and apparatus for image encoding and image decoding using region segmentation. A picture is divided into multiple sub-pictures, and encoding and/or decoding are performed on the multiple sub-pictures resulting from division. Encoding operations and/or decoding operations on the sub-pictures may be independently performed. Merging and filtering are applied to reconstructed sub-pictures generated by decoding, and a reconstructed picture is generated after processing of merging and filtering.